add-skill SKILL.md skillA

add-skill from openhands/extensions is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add openhands/extensions/add-skill@git:20260922.804c84b

Pins git:20260922.804c84b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
openhands/extensions
Path
skills/add-skill/SKILL.md
Versions recorded
6
Latest version
git:20260922.804c84b, committed Sep 22, 2026
First version recorded
Feb 6, 2026
Size
2,243 bytes
Repository stars
179
License
MIT

Import an existing skill from a GitHub repository URL into the current workspace. Use only when the user provides or references a GitHub URL/repo to fetch from (e.g., `/add-skill https://github.com/OpenHands/extensions/tree/main/skills/codereview` or "add the codereview skill from https://github.com/OpenHands/extensions/"). Handles fetching the skill files and placing them in .agents/skills/. This does not author new skills — to create a new skill from scratch (no source URL), use the…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Add Skill

Import skills from GitHub repositories into the current workspace.

## Workflow

When a user requests to add a skill from a GitHub URL:

1. **Parse the URL** to extract repository owner, name, and skill path
2. **Fetch the skill** using the bundled script. Run it from this skill's
   directory (the directory containing this SKILL.md file):
   ```bash
   python3 scripts/fetch_skill.py "<github-url>" "<workspace-path>"
   ```
3. **Verify** that SKILL.md exists in the destination
4. **Inform the user** the skill is now available

## URL Formats Supported

- `https://github.com/owner/repo/tree/main/path/to/skill`
- `https://github.com/owner/repo/skill-name`
- `github.com/owner/repo/skill-name`
- `owner/repo/skill-name` (shorthand)

## Example

User: `/add-skill https://github.com/OpenHands/extensions/tree/main/skills/codereview`

```bash
# Run the fetch script
python3 scripts/fetch_skill.py "https://github.com/OpenHands/extensions/tree/main/skills/codereview" "/path/to/workspace"

# Verify installation
ls /path/to/workspace/.agents/skills/codereview/SKILL.md
```
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add openhands/extensions/add-skill@sha256:dfe7467e03adfcbc

The line at the top of this page pins the label git:20260922.804c84b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_kdyp2fj3hrh34yc3.svg)](https://markdownregistry.com/a/art_kdyp2fj3hrh34yc3)

7 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 6 versions of this file, between Feb 6, 2026 and Sep 22, 2026, about one every 45 days.

versioncommittedcommitsizeaudit
git:20260922.804c84b latest2026-09-22 804c84b 2,243 BA view · diff
git:20260810.e13c1aa2026-08-10 e13c1aa 2,030 BA view · diff
git:20260701.599cc4d2026-07-01 599cc4d 1,891 BA view · diff
git:20260216.75f7c5c2026-02-16 75f7c5c 1,725 BA view · diff
git:20260211.a1d7f962026-02-11 a1d7f96 1,709 BA view · diff
git:20260206.49937782026-02-06 4993778 1,718 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2243 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

openhands/extensions · 179 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_kdyp2fj3hrh34yc3
GET https://markdownregistry.com/api/v1/resolve?ref=openhands/extensions/add-skill
GET https://markdownregistry.com/api/v1/blob/dfe7467e03adfcbca1cb2dd6db40d552a57584ad13c0abed311f82d25e5bd88c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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